Synchronization is crucial to the system performance for DS-UWB system with RAKE receiver.
采用RAKE接收的DS-UWB系统中，同步对系统的性能至关重要。
The reaserch in this paper is on ciruit design of system constructing frame in base-band of DS-UWB.
本文是基于DS-UWB对基带组帧的电路实现进行的研究。
The paper analyses and deduces the temporal expression and PSD of multiplicate typical UWB signal. PPM-TH-UWB and PAM-DS-UWB are the object in the research of paper.
接着论文具体分析和推导了几种典型的超宽带信号的时域表达式及其功率谱密度，PPM-TH-UWB信号、PAM-TH-UWB信号和PAM-DS-UWB信号都是本文研究的对象。
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